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    CachingIterator::key

    (PHP 5, PHP 7, PHP 8)

    CachingIterator::key — Return the key for the current element

    Description

    public CachingIterator::key(): scalar
    Warning

    This function is currently not documented; only its argument list is available.

    This method may return a key for the current element.

    Parameters

    This function has no parameters.

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